Declension table of ?vaidhavya

Neuter	Singular	Dual	Plural
Nominative	vaidhavyam	vaidhavye	vaidhavyāni
Vocative	vaidhavya	vaidhavye	vaidhavyāni
Accusative	vaidhavyam	vaidhavye	vaidhavyāni
Instrumental	vaidhavyena	vaidhavyābhyām	vaidhavyaiḥ
Dative	vaidhavyāya	vaidhavyābhyām	vaidhavyebhyaḥ
Ablative	vaidhavyāt	vaidhavyābhyām	vaidhavyebhyaḥ
Genitive	vaidhavyasya	vaidhavyayoḥ	vaidhavyānām
Locative	vaidhavye	vaidhavyayoḥ	vaidhavyeṣu

Compound vaidhavya -

Adverb -vaidhavyam -vaidhavyāt